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380 lines
10 KiB
C
380 lines
10 KiB
C
/* $Id: mksystab.c,v 1.2 2003/12/21 20:11:46 ea Exp $
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*
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* PROJECT : ReactOS / POSIX+ Subsystem
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* DESCRIPTION: Build the system calls table for
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* DESCRIPTION: the POSIX+ LPC server process.
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* NOTE : this code is supposed to be portable.
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* AUTHOR : Emanuele Aliberti
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* DATE : 2001-05-26
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* REVISIONS
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* 2002-03-19 EA added stub file generation
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* 2002-04-06 EA added to the CVS repository
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#define PARSER_CONTEXT_LINE_SIZE 1024
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#define PARSER_CONTEXT_INTERFACE_SIZE 64
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const char * myname = "mksystab";
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const char * syscall_name_prefix = "syscall_";
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const char * proxy_name_prefix = "psxss_";
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typedef enum {
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METHOD_SUCCESS,
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METHOD_EOF,
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METHOD_FAILURE
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} METHOD_TYPE;
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typedef struct _PARSER_CONTEXT
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{
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int line_number;
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int id;
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char line [PARSER_CONTEXT_LINE_SIZE];
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char status;
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char interface [PARSER_CONTEXT_INTERFACE_SIZE];
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int argc;
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} PARSER_CONTEXT, * PPARSER_CONTEXT;
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typedef struct _MFILE
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{
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char * name;
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FILE * fp;
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char * fopen_mode;
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METHOD_TYPE (*prologue)(int,PPARSER_CONTEXT);
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METHOD_TYPE (*iter)(int,PPARSER_CONTEXT);
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METHOD_TYPE (*epilog)(int,PPARSER_CONTEXT);
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} MFILE, * PMFILE;
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/* MFILE file table */
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METHOD_TYPE db_prologue (int self, PPARSER_CONTEXT context);
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METHOD_TYPE db_iter (int self, PPARSER_CONTEXT context);
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METHOD_TYPE db_epilog (int self, PPARSER_CONTEXT context);
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METHOD_TYPE systab_prologue (int self, PPARSER_CONTEXT context);
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METHOD_TYPE systab_iter (int self, PPARSER_CONTEXT context);
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METHOD_TYPE systab_epilog (int self, PPARSER_CONTEXT context);
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METHOD_TYPE psx_include_prologue (int self, PPARSER_CONTEXT context);
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METHOD_TYPE psx_include_iter (int self, PPARSER_CONTEXT context);
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METHOD_TYPE psx_include_epilog (int self, PPARSER_CONTEXT context);
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METHOD_TYPE server_include_prologue (int self, PPARSER_CONTEXT context);
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METHOD_TYPE server_include_iter (int self, PPARSER_CONTEXT context);
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METHOD_TYPE server_include_epilog (int self, PPARSER_CONTEXT context);
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METHOD_TYPE stubs_prologue (int self, PPARSER_CONTEXT context);
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METHOD_TYPE stubs_iter (int self, PPARSER_CONTEXT context);
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METHOD_TYPE stubs_epilog (int self, PPARSER_CONTEXT context);
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MFILE mf [] =
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{
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{ NULL, NULL, "r", db_prologue, db_iter, db_epilog }, /* it must be 1st */
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{ NULL, NULL, "w", systab_prologue, systab_iter, systab_epilog },
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{ NULL, NULL, "w", server_include_prologue, server_include_iter, server_include_epilog },
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{ NULL, NULL, "w", psx_include_prologue, psx_include_iter, psx_include_epilog },
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{ NULL, NULL, "w", stubs_prologue, stubs_iter, stubs_epilog }
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};
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/* mf objects methods */
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int mf_open (int index)
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{
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mf [index].fp = fopen (mf [index].name, mf [index].fopen_mode);
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if (NULL == mf [index].fp)
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{
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fprintf (stderr, "%s: error %d while opening \"%s\".", myname, errno, mf [index].name);
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return METHOD_FAILURE;
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}
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return METHOD_SUCCESS;
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}
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void mf_close (int index)
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{
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fclose (mf[index].fp);
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}
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/* db file methods */
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METHOD_TYPE db_prologue (int self, PPARSER_CONTEXT context)
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{
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if (METHOD_FAILURE == mf_open (self))
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{
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return METHOD_FAILURE;
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}
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fprintf (stderr, "Processing \"%s\"...\n", mf [self].name);
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return METHOD_SUCCESS;
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}
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METHOD_TYPE db_iter (int self, PPARSER_CONTEXT context)
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{
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char * eol;
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do
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{
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if (feof(mf [self].fp))
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{
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return METHOD_EOF;
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}
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if (NULL == fgets (context->line, PARSER_CONTEXT_LINE_SIZE, mf [self].fp))
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{
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return METHOD_EOF;
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}
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++ context->line_number;
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eol = strchr(context->line, '\n');
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if (eol)
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{
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*eol = '\0';
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}
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/* Is line empty or a comment? */
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} while (0 == strlen (context->line) || context->line[0] == '#');
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/* Line is not a comment nor an empty line */
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if (3 != sscanf (context->line, "%c%s%d", & context->status, context->interface, & context->argc))
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{
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fprintf (stderr, "Syntax error at line %d.\n", context->line_number);
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return METHOD_FAILURE;
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}
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return METHOD_SUCCESS;
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}
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METHOD_TYPE db_epilog (int self, PPARSER_CONTEXT context)
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{
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mf_close (self);
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return METHOD_SUCCESS;
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}
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/* systab file methods */
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METHOD_TYPE systab_prologue (int self, PPARSER_CONTEXT context)
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{
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if (METHOD_FAILURE == mf_open (self))
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{
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return METHOD_FAILURE;
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}
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fprintf (mf[self].fp, "/* POSIX+ system calls (machine generated: do not edit!) */\n");
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fprintf (mf[self].fp, "#include <psxss.h>\n");
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fprintf (mf[self].fp, "#include <syscall.h>\n");
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fprintf (mf[self].fp, "PSX_SYSTEM_CALL SystemCall [] =\n");
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fprintf (mf[self].fp, "{\n");
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return METHOD_SUCCESS;
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}
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METHOD_TYPE systab_iter (int self, PPARSER_CONTEXT context)
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{
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switch (context->status)
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{
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case '+':
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case '-': /* unimplemented interface */
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fprintf (mf[self].fp, "(void*)%s%s,\n", syscall_name_prefix, context->interface);
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break;
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default:
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fprintf (stderr, "%s: unknown interface status \"%c\" at line %d.\n",
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myname, context->status, context->line_number);
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return METHOD_FAILURE;
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}
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return METHOD_SUCCESS;
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}
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METHOD_TYPE systab_epilog (int self, PPARSER_CONTEXT context)
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{
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fprintf (mf[self].fp, "0\n};\n");
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fprintf (mf[self].fp, "/* EOF */\n");
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return METHOD_SUCCESS;
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}
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/* server/include file methods */
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METHOD_TYPE server_include_prologue (int self, PPARSER_CONTEXT context)
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{
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if (METHOD_FAILURE == mf_open (self))
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{
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return METHOD_FAILURE;
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}
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fprintf (mf[self].fp, "/* POSIX+ system calls (machine generated: do not edit!) */\n");
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fprintf (mf[self].fp, "#ifndef _SERVER_SYSCALL_H\n");
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fprintf (mf[self].fp, "#define _SERVER_SYSCALL_H\n");
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return METHOD_SUCCESS;
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}
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METHOD_TYPE server_include_iter (int self, PPARSER_CONTEXT context)
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{
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char interface [PARSER_CONTEXT_INTERFACE_SIZE*2];
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sprintf (interface, "%s%s", syscall_name_prefix, context->interface);
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fprintf (mf[self].fp, "NTSTATUS STDCALL %s (PPSX_MAX_MESSAGE);\n", interface);
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return METHOD_SUCCESS;
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}
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METHOD_TYPE server_include_epilog (int self, PPARSER_CONTEXT context)
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{
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fprintf (mf[self].fp, "#endif /* ndef _SERVER_SYSCALL_H */\n");
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fprintf (mf[self].fp, "/* EOF */\n");
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return METHOD_SUCCESS;
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}
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/* psx/include file methods */
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METHOD_TYPE psx_include_prologue (int self, PPARSER_CONTEXT context)
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{
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if (METHOD_FAILURE == mf_open (self))
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{
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return METHOD_FAILURE;
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}
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fprintf (mf[self].fp, "/* POSIX+ system calls (machine generated: do not edit!) */\n");
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fprintf (mf[self].fp, "#ifndef _PSX_SYSCALL_H\n");
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fprintf (mf[self].fp, "#define _PSX_SYSCALL_H\n");
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return METHOD_SUCCESS;
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}
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METHOD_TYPE psx_include_iter (int self, PPARSER_CONTEXT context)
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{
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char interface [PARSER_CONTEXT_INTERFACE_SIZE*2];
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sprintf (interface, "%s%s", proxy_name_prefix, context->interface);
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fprintf (mf[self].fp, "#define %s %d\n", strupr(interface), context->id ++);
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return METHOD_SUCCESS;
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}
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METHOD_TYPE psx_include_epilog (int self, PPARSER_CONTEXT context)
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{
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fprintf (mf[self].fp, "#define PSX_SYSCALL_APIPORT_COUNT %d\n", context->id ++);
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fprintf (mf[self].fp, "#endif /* ndef _PSX_SYSCALL_H */\n");
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fprintf (mf[self].fp, "/* EOF */\n");
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return METHOD_SUCCESS;
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}
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/* stubs file methods */
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METHOD_TYPE stubs_prologue (int self, PPARSER_CONTEXT context)
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{
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if (METHOD_FAILURE == mf_open (self))
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{
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return METHOD_FAILURE;
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}
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fprintf( mf[self].fp,
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"/* POSIX+ system calls not yet implemented */\n"
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"/* (machine generated: do not edit!) */\n"
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"#include <psxss.h>\n");
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return METHOD_SUCCESS;
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}
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METHOD_TYPE stubs_iter (int self, PPARSER_CONTEXT context)
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{
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if ('-' == context->status)
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{
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fprintf (
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mf[self].fp,
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"NTSTATUS STDCALL %s%s(PPSX_MAX_MESSAGE Msg){Msg->PsxHeader.Status=STATUS_NOT_IMPLEMENTED;return(STATUS_SUCCESS);}\n",
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syscall_name_prefix,
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context->interface
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);
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}
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return METHOD_SUCCESS;
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}
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METHOD_TYPE stubs_epilog (int self, PPARSER_CONTEXT context)
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{
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fprintf (mf[self].fp, "/* EOF */\n");
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return METHOD_SUCCESS;
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}
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/* main loop */
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METHOD_TYPE mksystab ()
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{
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int index;
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int index_top = (sizeof mf / sizeof mf[0]);
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int iterate = 1;
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PARSER_CONTEXT context;
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METHOD_TYPE mt;
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/* initialize the parser's context */
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context.line_number = 0;
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context.id = 0;
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/* prologue */
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for (index = 0; index < index_top; index ++)
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{
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if (METHOD_FAILURE == mf[index].prologue (index, & context))
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{
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return METHOD_FAILURE;
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}
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}
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/* iter */
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while (iterate)
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{
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for (index = 0; index < index_top; index ++)
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{
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mt = mf[index].iter (index, & context);
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if (METHOD_EOF == mt)
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{
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if (0 == index) /* input MUST be 1st MFILE */
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{
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iterate = 0;
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break; /* input reached EOF */
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}
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return METHOD_FAILURE;
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}
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else if (METHOD_FAILURE == mt)
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{
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return METHOD_FAILURE;
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}
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}
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}
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/* epilog */
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for (index = 0; index < index_top; index ++)
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{
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if (METHOD_FAILURE == mf[index].epilog (index, & context))
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{
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return METHOD_FAILURE;
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}
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}
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/* done */
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return METHOD_SUCCESS;
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}
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/* entry point */
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int main (int argc, char **argv)
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{
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int status = 0;
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int index;
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/* Check user parameters */
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if ((1 + (sizeof mf / sizeof (MFILE))) != argc)
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{
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printf ("ReactOS Operating System - POSIX+ Environment Subsystem\n");
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printf ("Build the system calls table of the POSIX+ server.\n\n");
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printf ("usage: %s syscall.db syscall.c syscall.h syscall.h stubs.c\n", argv[0]);
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exit (METHOD_FAILURE);
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}
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/* initialize descriptors */
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for (index = 0; index < (sizeof mf / sizeof mf[0]); index ++)
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{
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mf [index].name = argv [index + 1];
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}
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/* do process them */
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status = mksystab ();
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return (status);
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}
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/* EOF */
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